Magazine extension



FIG. 1 is a front elevation view of a magazine extension, showing my new design;

FIG. 2 is a left side view thereof; the right side view being the mirror image thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a rear elevation view thereof;

FIG. 6 is a top-front perspective view thereof; and,

FIG. 7 is a bottom-rear perspective view thereof. 

CLAIM The ornamental design for a magazine extension, as shown and described. 